Mark McLoughlin a écrit :
Hi,
On Sat, 2008-08-23 at 21:21 +0200, Fabian Deutsch wrote:
Hey.
When running a guest in the following setup, I observ a "massive"
performance decrease after a couple of gigabytes of transfrerred data.
other guests keep running fine (no regressions) and nothing unusual is
observed on the host.
If you do "killall -ALRM qemu-kvm" after the slowdown has occurred, does
it make things speed up again for a while?
Too soon to say if it works for us as it seems the problem is long to
trigger in our case ; Anyway as the problem seems similar, it's good to
know it is probably fixed.
If so, the issue is fixed by:
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=ba661292a2bc6ddd305a212b0526e5dc22195fe7
It also got applied in 2.6.26.3 and 2.6.25.16.
Ok, so upgrading the kernel is sufficient ?
Cheers,
Mark.
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Thanks for the answer,
greetings,
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Yann Dupont - Service IRTS, DSI Université de Nantes
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